En Passant is obvious: fresh, relaxing and sweet, this is almost a shy fragrance. While not everyone may like it, nobody will be offended by it. I imagine this being a great summer fragrance.
Bois D'Argent might seem an odd choice, given that it's technically a mens fragrance. However, I - and all women I've ran across who've smelled it - really don't think you could call this a "male" fragrance in any traditional sense. It's unisex, and could be marketed to women easily.
As a fragrance, Bois D'Argent is a nice introduction to iris scents, the rooty-violet quality of the iris mellowed by honey at first and vanilla later on. It's also a cologne, so it's not heavy at all.
Poivre might seem the oddest choice, given that it's from the rich, rather heavy and old-fashioned Carons but to me it's a great comfort scent, and perfect for winter. It's not a strange, challenging spice but a warm apple pie and carnations fragrance that I feel deserves more press.

Re: If you could only pick 3

Your nostrils, which will dilate immesurably in unspeakable contentment, in motionless ecstasy, will ask nothing better for space, for they will be full of fragrance, as if perfumes and incense; for they will be glutted with complete happiness, like angels who dwell in the peace and magnificence of pleasent heaven.
(From Maldoror by Comte de Lautreamont)

Re: If you could only pick 3

Cartier Pasha
Hermes Concentree l'Orange Verte
Kiehl's Musk

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